Opinionated Plugins
One-click installs for curated tools that reduce token usage and reshape agent behavior across backends.
Jean ships an Opinionated pane in Preferences that installs curated third-party tools with one click.
These are not built into Jean. They are external plugins Jean knows how to install, check, and link to for you.
What is included
RTK — a system-wide CLI proxy that filters and compresses command outputs before they reach the agent. Cuts token consumption 60-90% on common dev commands like git, npm, docker, cargo. Runs transparently after install; every backend sees the smaller output.
- Applies to: Claude, Codex, OpenCode, Cursor, every CLI backend
- Scope: system-wide (shell-level)
- Verify:
rtk status - Configure:
rtk config
Caveman — a Claude Code skill that makes the agent answer in a terse, fragment-heavy style. Cuts output tokens roughly 65-75% while keeping technical accuracy.
- Applies to: Claude only
- Scope: Claude CLI plugin
- Switch intensity:
/caveman lite|full|ultra - Disable:
stop caveman - Extra commands:
/caveman-commit,/caveman-review,/caveman-compress
How the pane works
Each plugin card shows:
- name, description, and backend scope
- install status (installed, version, or "Install" button)
- GitHub link
- usage steps once installed
Jean calls the backend command to install the plugin, then shows a success or error toast.
For plugins already installed, the card shows a refresh button to re-check status.
When to use each
Use RTK when:
- sessions burn tokens on long tool output (big git diffs, noisy test runs, container logs)
- you want token savings that apply to every backend, not just Claude
Use Caveman when:
- you run long Claude sessions and want shorter replies
- the terse style matches how you read answers
- you are fine losing some verbose explanation
Both can run together. RTK trims tool inputs. Caveman trims agent outputs.
Caveats
These plugins are external projects. Jean installs and surfaces them, but it does not ship their source.
Read the linked GitHub repos before enabling if you want full context on what each plugin does.